As far as OTC for Colorado.

Deer is all draw. No OTC tags. There's some leftover tags that go on sale to the public in Aug, but it's tough to get anything decent.

Elk is the same way. All the OTC tags for elk are for 2nd and 3rd rifle season. Again, you have a chance at leftover tags in Aug.

If you bow hunt you have lots of OTC for elk. Still none for deer.